A ball is thrown vertically upwards with a speed of \( 20 \, \text{m/s} \). What is the maximum height reached by the ball? Assume the acceleration due to gravity is \( g = 9.8 \, \text{m/s}^2 \).
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To find the maximum height in vertical motion, use the equation \( v^2 = u^2 + 2as \) where the final velocity \( v = 0 \) at the highest point.